description Sandqvist 157 Overview
Sandqvist 157 is a designation in Aage Sandqvist's catalog of southern dark nebulae. The object is identified as an area of dense interstellar dust that obscures light from stars and more distant astronomical sources. Sandqvist's survey used observations from the ESO Schmidt telescope and recorded opaque clouds in the southern sky. The designation is used in astronomical references to this particular dark nebula.
help Sandqvist 157 FAQ
What is Sandqvist 157?
It is a designation in Aage Sandqvist's catalog of southern dark nebulae. The object is an area of dense interstellar dust, not a single star.
Why does Sandqvist 157 look dark?
Dense interstellar dust blocks light from stars and more distant astronomical sources behind it. 'Dark nebula' describes that obscuring effect, not the object being empty.
Who cataloged Sandqvist 157?
Aage Sandqvist included it in his catalog of southern dark nebulae. The catalog name is therefore part of the object's identification.
How was Sandqvist 157 surveyed?
Sandqvist's survey used observations from the ESO Schmidt telescope. That survey context explains why the object appears as a catalog designation rather than a familiar planet or star name.
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